void callback(struct ev_loop *loop, ev_io *w, int events)
{
    if (EV_READ == events) {
      ...
    }
    else if (EV_WRITE == events) {
      ...
    }
    else {
      here recv event's number is 3
    }
}

在libev源代码“ev.h”中,我没有找到定义数字0x03的宏
EV_READ     =            0x01, /* ev_io detected read will not block */
EV_WRITE    =            0x02, /* ev_io detected write will not block */

最佳答案

这是一个面具。 3表示可读条件和可写条件均可供处理。

尝试类似的东西

if (events & EV_READ) {  // something is readable
  ...
}
if (events & EV_WRITE) { // something is writable
  ...
}

10-07 19:15
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